Supply maximum current çell should be arranged in
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12th
Physics
Current Electricity
EMF, Terminal Voltage and Internal Resistance and Problems on It
To supply maximum current, ...
PHYSICS
To supply maximum current, cells should be arranged in
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ANSWER
To supply maximum current , the arrangement of cells depends on the internal and external resistance .
(i) If n cells , each of internal resistance r and emf E , are connected in series , then current in circuit ,
i=
nr+R
nE
(where R= External resistance )
if , nr<<R , then i=
R
nE
=n× (current from one cell) ,
if , nr>>R , then i=
nR
nE
=
R
E
= (current from one cell)
(ii) If n cells , each of internal resistance r and emf E , are connected in parallel , then current in circuit ,
i=
r+nR
nE
(where R= External resistance )
if , r>>R , then i=
R
nE
=n× (current from one cell) ,
if , r<<R , then i=
nR
nE
=
R
E
= (current from one cell)